Weft-replenishing mechanism for looms.



H; ZWICKY.

WEFT REPLENISHING MECHANISM FOR LOOMS.

APPLICATION FILED FEB.3,1908. I

Patented July 6,1909.

I weizfem this arrangement a relative HEINRICH ZWICKY, O1 StTHINDELLEGI, SWITZERLAND.

WEFT-REPLENISHING ME CHAN ISM FOR LOOMS.

Specification of Letters Patent.

Patented J'ulyc, 1909.

Application filed February a, 1908. Serial No. 414,048.

To all whom it may concern:

Be it known that I, HEINRIOH ZwroKY, a citizen of the Relpublic of Switzerland, resid' mg at Schindel egi, Canton of Schwyz, in

Switzerland, have invented certain new and useful Improvements in Weft-Replenishing l Mechanism for Looms; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and figures of reference marked thereon, which form a part of this specification.

This invention has for its object an apparatus for automatically changing or replacing the weft pirns in looms and comprises a pirn magazine, and a device for removing the p rns from the magazine and inserting these p rns in the shuttles. In devices of. this kind ltherto employed, the magazine and the mechanism or removing and inserting the pirns were independent of the lay, and were arranged on the front side of the loom. The insertion in the shuttle of a pirn withdrawn from the magazine had to take place at the moment at which the lay, in the normal working of the loom, had reached its front deadpoint position, and therefore the time for this insertion was extremely brief. If for any reason the lay reached this deadpoint position somewhat prematurely, or somewhat late, the pirn changing mechanism failed to work correctly.

In the mechanism Whichforms the subjectmatter of the present invention, the magazinc and the device for removing and insertmg the pirns, are mounted on the lay. In

movement for- Ward of the removing and inserting device to the lay, does not take place, nor to the shuttle while the la'ttcr rests in the shuttle box, so that a much longer time is at disposal for the insertion of the pirn.

The object of the invention is shown in one form of construction as an example in the l accompanying drawin s, Figure 1 being a section on the line A- of Fig. 2, and Fig. 2 a front elevation, while Fig. 3 is a detail.

he pirn magazine 1 is held over the lay by means of a carrying or supporting arm 2 to which it is attached. This magazine forms a box, open above and below, rising obliquely to the front from the lay, the front and rear walls 1 having a spring action relativeto one another and to the upper aperture or mouth. 1 which is turned to the front and somewhat contracted. A catch 3 is mounted on the supporting arm 2, which catch is controlled by a spring 4. On the lay, a sector 6 (shown separately in Fig; 3) is located in such a way as to be pivotal on an axis 6, which sector has to right and left, on its up.- per end 7, forked'projections 8, 9 and on the side a pin 1 1.

13 is a rod, one end 12 of which, is forked,

' and the other end 14 of which is connected with a spring 1.5 arranged on the frpnt side of the loom. This rod 13 rests on a s ring 16 which is attached to the boss l7'of a lever arm 18, against which abar 19 belonging to the ordinary weft guard device-of the loom, rests.

20 is a spiral spring one end of which is attached to the sector 6 and the other to the lay. The movement of the sector, which this spring tends to produce, is limited by a regulating screw 21 which serves as a stop for the sector.

5 are full pirns lying in the magazine. The lowermost of these pirns is carried by the forked projections 8 and 9 of the sector 6 and held on the segment by the catch 3 pressing against them.

22 are two clamp disks lying against one another, between. which the ends of the threads of the pirns 5 are held.

The mode of action of the pirn changing mecl ianism hereinbefore described is as follows? On the breakage of a thread, or the exhaustion of the weft thread, the rod 19,

.and by it the lever 18, are moved by the thread guard device, in the direction indicated by the arrow, which consequently lifts the rod 1.3. The pin 11 which otherwise can pass the rod 13, then encounters the forked end 12 of the rod, on tho moven'icnt of the lay into its front deadpoint position. By the pin 11 encountering the rod. 13, the sector 6 is swung out in: the direction indicated by the arrow and conveys .thcpirn carried. by the projections 8, 9 into the shuttle thereby pushing aside the catch 3, and expelling the pirn located in the shuttle, which drops out downward through an aperture in thelay.

During this swinging out of the sector, the

catch 3 forms a guide for the p'irn, retained by'the projections 8 and 9, from the magazinc to the shuttle. Then when the lay swings back, thesector is moved back are" its initial position by means of the spiral spr 2t), and the catch 3 by means of the f The pirns lying in the magazine downward and the lowern'iost of them see she position of the one which has inserted in the shuttle. By the rod l3 =ing mounted on a spring, the force of the clrs he pin 15 encounters the end 13 vhe rod, is somewhat mitigated.

. in may be inserted in the magazine during he :1 Iement of the lay by holding this pirn in the path oi the upper opening or mouth of he magazine. On the swinging forward oi the lay, the magazine, the upper end of which forms a jaw or mouth, seizes this pirn and laid it with it.

Jr bar is arranged in the magazine, which bar engages behind the head of the rear end of the pirn spindles and is intended to prevent the pirns in the magazine vibrating dnr the reciprocation of the lay.

'1 i n mayazinc may be only loosely insorted in the socket at the upper end of the carrying arr orccr to allow of its being removed from the carrying arm and filled ,irns away from the loom. Such a mag sari azinc may be inserted in the socket of the carrying arm during the movement of the lay, in si milur nuinner, to the example shown, when a pirn is insorteiil in the magazine; the socket of the carry i erably made cspa "ble and its upner apertore tapering outwardly, in order to racilitate the insertion of the magazine, Such a con struction is particularly ndaptcd for rapid running looms.

In place of the two clamp disks 22 any other suitable device for holding the thread cnds may be provided, for instance a roller with a card clothing. The arrangement shown has however the advantage of great simplicity and it may he oasilyapplied to already existing looms. v

Having now particularly described and ascertained the nature of mysaid invention and in what manner the same is to he pcrformed, I declare that what I claim is:

l. in an automatic welt replenishing mcch-.

snism for looms the combination with the lay; of a pirn ,nmgezine mounted on the lay, a der 'ce also mounted on the lay to seize and carry a pirn from the magazine to the shuttle and mechanism to actuate said device.

2 in an automatic wcl't replenishing mochunisjsn for looms the comlnnation with the lay; of a pirn magazine mounted on the lay and a sector A lay 3 izc ti owermost pirn in the magnzinc aminsert it in the. shuttle and simultaneously expel the pirn or pirn spindle in the shuttle. I

in an automatic wcl't replenishing mechanism for looms the combination with the lay; of a'jpirn magazine mountedon the lay, a pivotally mounted sector also on the lay and means to engage and rotate the sector, said ,3 arm in this case is prefa so pivotally mounted on thezine and a pivotnlly mounted sector l r rcmoving the pirns therefrom and inserting them in the shuttles, the pirn imigaziuc and the sector being mounted on the lay and the latter having l'orkcd projections supporting the lowermost pirn in the magazine.

;6. In an apparatus in looms for automatically changing or replacing the well pirns, a pirn magazine and a pivotally mounted soctor for removing the irns therefrom. and inserting them in the s iuttles, the irn nmgazinc and the sector being mounted on the lay and a spring catch under the magazine to hold the pirn in position as it is carried by the sector to the shuttle.

6. In an automatic weft replenishing mechanism for looms the combination with a lay; of a pirn magazine mounted on the lay, a soring catch at the end of the magazine, a

sector also mounted on. the lay and having forked projections and means to actuate the sector, said sector and spring catch cooperatingto guide a pirn to the shuttle.

7. In automatic weft replcnishin mech anism for looms the combination wit a lay of a socket mounted onthe lay, a pirn magof a socket mountedon the lay, a forwardly projecting pirn magazine having a contracted spring mouth and mounted in the socket, said ma 'azme and socket forward oi the racewey m the lay and means to take a pirn from the raceway and insert it in t he shuttle. i

9,. In an automatic welt replenishin mechanism, for looms the combination wit a la of a socket mounted on the lay, a removal) e pirn magazine in the socket, a sprin controlled'sector pivotally mounted on we lay and having lateral forked projections, said projectionsengaging tllOlOt VCYHlOSt im in the magazine and means controlled y the "weft detecting mechanism of the loom to move the sector, said sector during its movemerit closing the. bottom of the ma azine.

10. in an automatic weft rep enishing mechanism for looms, the combination with the lay; of a pirn magazine and a sector, both mounted on the lay, a pin on the sector, and a pivoted rod, and i'neans controlled by the weft detecting mechanism of the loom to move the end of the rod in the path of said pin to move the sector and cause it to remove a pirn from the magazine into the shuttle.

F 11. In an automatic Weft replenishing mechanism for looms, the combination with the lay; of a pirn magazine and a spring retracted sector, both mounted on the lay, at on the sector, it spring-supported pivoted pin on the sector, a pivoted spring supported arm having a forked end and means operated arm having a forked end and mechanism by the weft detector of the loom to move the 15 controlled by the weft detector of the loom 1 arm to cause its forked end to engage said to move said arm into the path of said pin. pin.

12. In an autonmtic Weft replenishing In testimony that 1 claim the foregoing as mechunisijn for looms, the combination with my invention, 1 have signed my name in theley, of -a socket having a spring catch presence of two subscribing witnesses.

thereon, aremovzthle inclined pirnnmgezine HEINRICH ZWKKY. therein, a, spring retracted sector having Witnesses:- forked PI'OJGCUOHS, said sector, socket and ERNST risenlcn,

magazine forward of the shuttle race, a pin JOSEPH SmoN. 

